No, you will not be able to access and log in to the Touch 'n Go eWallet app using a jailbroken/rooted device.
Below are the articles that may be useful for you :
Why is the Touch ‘n Go eWallet app not supported on jailbroken / rooted devices?
Can I log in to my Touch ‘n Go eWallet account using another device that is not jailbroken / rooted?
Can I continue enjoying the RFID and/or the “TNG Card” feature?
[Android] What does “rooted device” mean?
[iOS] What does “jailbroken device” mean?